Electric-lamp socket.



J. G. PETERSON. ELECTRIC LAMP SOCKET. APPLICATION FILED 001 .25, 1909.

Patented Jan. 18,1910.

8 M m W 1,1 ATTORNEYS i, tinrrnio enrich JOHANN G. PETERSON, F vHALE/E350RD, CONNECTICUT, ASSIGNOE T0 AEliKUW ELEU TRIC COMPANY, OF HARTFORD, GONNECTIO'UT, 11.- CORPURATIUN 011E CQIUSIECTIGUT.

ELECTRIC-LAMP fiUOKEJI.

Specification of Letters Patent.

Application filed October 525, 1908. Ecrial 1t 0. 51534 .333.

To all whom it may concern: Be it known that l, JOHANN G. Pn'rnnson,

a citizen of the United States 01:" America,

residing in the city of Hartford, in' the county of Hartford and State of Connectiout, have invented certain new and useitul Improvements in Electric- Lam Sockets, of which the following is a speci cation.

My invention relates to that class of electric lamp sockets in which the metallic cap and shell are provided with means for detachably securing them together in any one of manydiflerent positions rotarily, these means including teeth on the inner end of the shell in combination with corrugations in the cap to receive the teeth on the end of the shell and spring latching means to prevent the endwise detachment of the shell from the cap. I E

The object of my invention is to provide a convenient, and inexpensive construction of the cap pert, such that the cap will .be stronger than as heretofore constructed, and

presenting'a better appearance externally,

while at the same time more eilective holdingmeans are provided to cooperate with the teeth on the end of the shell.

In the accompanying drawings Figure 1 is a vertical section of a cap and shell, em-

'bodying my invention and shown detached from each other; Fig. 2 is a side View-tot the internal holding ring in cup form, be fore it is secured in'the cap; Fig. 3 is a face view of the same; Fig. 4 is a sectional view of a modification.

As shown in Fig. l, the end of the shell A which is to be sleeved within the flange b of the cap B is made with any suitable number of teeth. These teeth, which may conveniently be shaped like saw teeth, may be many in number, as indicated in Fig. 1, or "few as indicated in Fi 4.

in cup and shell fastening constructions employing this arrangement of teeth to hold the cup and shell rotarily, the notches or tceth to coiipcrat'c with the teeth on the shell have been foru'lcd in the metal of the cop itsclf, but that I found to be undesirable both bccaus; it weakens the cap and injures its .11 1; trance, and also because it is *litl ilt to g t in the cap satisfactory hold Patented Jan. in, into.

,ing teeth or notches. To meet these difisecure within the cap a C01Tll-' gated ring whose width lies in a plane at" culties I right angles to the axis of thecap and shell.

I prefer to form. this ring as the flange of a cup to be secured within the cap by means of the nipple, as hereinafter described.

Referring to Figs. 1, 2 and 3, the cap B has any usual or convenient form of nipple cl, and the cap is, as heretofore, spun up with an internsl\annulai shoulder c to receive and engage the bevel latchingpro jections a on the shell A: to secure the two together longitudinally. Just back of this shoulder c provide the corrugated engaging ring l which I prefer to form on or as the flange eta sheei getal cup-shaped piece l fitting Within thecap B, and secured in place by the fianging over oi the nipple d. .lhe Width of the flange F lies in a plane substantially at right angles to, the axis of the cap and therefore it presents a wide face for engagement of the teeth on the end of the shell. instead of inaking'this corrugated ring as the flange of a cup which is secured to the cap as described, the ring may be made without the supporting cup part, and nay be secured Within the cap by soldering, as indicated Fig. 4-. In either case, the corrugated sheetmetal ring, he sides possessing the advantages above described, is easy and economical to make, and yet strong and durable and also strengthening to the cap.

I claim as my invention:

1. An incandescent lamp socket, comprising a shell. with teeth on its inner, end in combination with a. cap, containing a corrugated ring secured in the cap to engage the teeth on the outlet the shell and means for latching the shell and cap together against endwise detachment.

2. [in incandescent lamp socket, comprising a shell with teeth on its inner end in combination With a. cap containing a cooperating corrugated ring secured in the cap and whose width is in a plane at right angles to the axis of the cap and means for latching the shell and cap together against endwise detachment.

3. An incandescent lamp socket, coniprising a shell with teeth on its inner end in name to this specificatidn, in the presence of combinatizln Wit}? :1 cap cogtginingga flanged two subscribing witnesses. cup secureint ecap,sai an e ein corrugated to coiiperate with the teeth o f the JOH'ANN PETERSON shell and spring latching means to hold the Witnesses: shell and cap tqgether lon itudinally. D. J. GLAZIER,

In testimony whereof fhave signed my CHAS. B. KELSY. 

